KxsClient/svg2png.html at main · Kisakay/KxsClient · GitHub

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<!doctype html>
<html lang="en">

<head>
	<meta charset="utf-8" />
	<meta name="viewport" content="width=device-width,initial-scale=1" />
	<title>SVG → PNG Converter (Drag & Drop)</title>
	<style>
		:root {
			--bg: #0f172a;
			--card: #0b1320;
			--accent: #06b6d4;
			--muted: #98a8b9;
			color-scheme: dark
		}

		* {
			box-sizing: border-box
		}

		body {
			font-family: Inter, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
			margin: 0;
			background: linear-gradient(180deg, #071024 0%, #07122a 100%);
			color: #e6eef6;
			min-height: 100vh;
			display: flex;
			align-items: center;
			justify-content: center;
			padding: 32px
		}

		.wrap {
			width: 980px;
			max-width: 96%;
			background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.01));
			border-radius: 12px;
			padding: 20px;
			box-shadow: 0 6px 30px rgba(2, 6, 23, 0.6)
		}

		h1 {
			margin: 0 0 8px;
			font-size: 20px
		}

		p.lead {
			margin: 0 0 16px;
			color: var(--muted)
		}

		.controls {
			display: flex;
			gap: 12px;
			flex-wrap: wrap;
			margin-bottom: 14px
		}

		.control {
			background: rgba(255, 255, 255, 0.02);
			padding: 10px;
			border-radius: 8px;
			display: flex;
			gap: 8px;
			align-items: center
		}

		.control label {
			font-size: 13px;
			color: var(--muted)
		}

		input[type=range] {
			width: 160px
		}

		input[type=color] {
			width: 44px;
			height: 34px;
			border: 0;
			padding: 0;
			background: none
		}

		.drop {
			border: 2px dashed rgba(255, 255, 255, 0.06);
			padding: 28px;
			border-radius: 10px;
			display: flex;
			gap: 16px;
			align-items: center
		}

		.drop.dragover {
			background: linear-gradient(90deg, rgba(6, 182, 212, 0.06), rgba(6, 182, 212, 0.02));
			border-color: var(--accent)
		}

		.drop .left {
			flex: 1
		}

		.drop .right {
			width: 240px;
			text-align: center
		}

		.files {
			margin-top: 12px;
			display: grid;
			gap: 10px
		}

		.file-item {
			display: flex;
			align-items: center;
			gap: 12px;
			padding: 8px;
			border-radius: 8px;
			background: rgba(255, 255, 255, 0.015)
		}

		.file-item img {
			width: 56px;
			height: 56px;
			object-fit: contain;
			border-radius: 6px;
			background: #fff;
			border: 1px solid rgba(255, 255, 255, 0.04)
		}

		.file-meta {
			flex: 1
		}

		.btn {
			background: var(--accent);
			color: #042031;
			padding: 8px 12px;
			border-radius: 8px;
			border: 0;
			cursor: pointer
		}

		.btn.ghost {
			background: transparent;
			border: 1px solid rgba(255, 255, 255, 0.04);
			color: var(--muted)
		}

		.footer {
			margin-top: 14px;
			color: var(--muted);
			font-size: 13px
		}

		@media (max-width:700px) {
			.drop {
				flex-direction: column
			}

			.drop .right {
				width: 100%
			}
		}
	</style>
</head>

<body>
	<div class="wrap">
		<h1>SVG → PNG Converter (Drag & Drop)</h1>
		<p class="lead">Drag and drop one or more .svg files from your computer, choose the size and background color,
			then click <strong>Convert</strong> to download.</p>

		<div class="controls">
			<div class="control">
				<label for="scale">Scale (px for 1x):</label>
				<input id="scale" type="range" min="64" max="4096" value="1024" />
				<div id="scaleVal">1024</div>
			</div>

			<div class="control">
				<label for="bg">Background:</label>
				<input id="bg" type="color" value="#000000" />
				<label style="margin-left:6px"><input id="transparent" type="checkbox" /> Transparent</label>
			</div>

			<div class="control">
				<label for="dpi">DPR (device pixel ratio):</label>
				<select id="dpi">
					<option value="1">1</option>
					<option value="1.5">1.5</option>
					<option value="2" selected>2</option>
					<option value="3">3</option>
				</select>
			</div>

			<div class="control">
				<input id="fileInput" type="file" accept=".svg,image/svg+xml" multiple style="display:none" />
				<button id="pick" class="btn ghost">Select files</button>
			</div>

		</div>

		<div id="drop" class="drop">
			<div class="left">
				<strong>Drop your SVG files here</strong>
				<div style="margin-top:8px;color:var(--muted)">Or click on "Select files". All processing happens
					locally in your browser (no upload).</div>

				<div class="files" id="files"></div>
			</div>

			<div class="right">
				<div style="margin-bottom:8px"><button id="convertAll" class="btn">Convert all</button></div>
				<div style="font-size:13px;color:var(--muted)">Tips:
					<ul style="padding-left:16px;margin:8px 0 0;color:var(--muted)">
						<li>External fonts may not render if not embedded in the SVG.</li>
						<li>If your SVG contains external images, they must be locally or online accessible.</li>
					</ul>
				</div>
			</div>
		</div>

		<div class="footer">Made with ❤️ — everything runs locally in your browser.</div>
	</div>

	<script>
		// Helpers
		const $ = id => document.getElementById(id);
		const filesList = [];

		// Elements
		const drop = $('drop');
		const fileInput = $('fileInput');
		const pick = $('pick');
		const filesEl = $('files');
		const scale = $('scale');
		const scaleVal = $('scaleVal');
		const bg = $('bg');
		const transparent = $('transparent');
		const dpi = $('dpi');
		const convertAll = $('convertAll');

		scale.addEventListener('input', () => { scaleVal.textContent = scale.value });

		pick.addEventListener('click', () => fileInput.click());
		fileInput.addEventListener('change', e => handleFiles(e.target.files));

		// Drag & drop
		['dragenter', 'dragover'].forEach(ev => {
			drop.addEventListener(ev, e => { e.preventDefault(); e.stopPropagation(); drop.classList.add('dragover') });
		});
		['dragleave', 'drop'].forEach(ev => {
			drop.addEventListener(ev, e => { e.preventDefault(); e.stopPropagation(); drop.classList.remove('dragover') });
		});

		drop.addEventListener('drop', e => {
			const dt = e.dataTransfer;
			if (dt && dt.files) handleFiles(dt.files);
		});

		function handleFiles(fileList) {
			const arr = Array.from(fileList).filter(f => f.type === 'image/svg+xml' || f.name.toLowerCase().endsWith('.svg'));
			if (arr.length === 0) { alert('Aucun fichier SVG détecté.'); return }
			arr.forEach(f => { const id = crypto.randomUUID(); filesList.push({ id, file: f }); renderFileItem(id, f) });
		}

		function renderFileItem(id, file) {
			const item = document.createElement('div'); item.className = 'file-item'; item.dataset.id = id;
			const img = document.createElement('img'); img.alt = 'preview';

			// small placeholder until we can render preview
			img.src = 'data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="200" height="200"><rect width="100%" height="100%" fill="%23000"/><text x="50%" y="50%" fill="%23fff" font-size="18" text-anchor="middle" alignment-baseline="middle">SVG</text></svg>';

			const meta = document.createElement('div'); meta.className = 'file-meta';
			meta.innerHTML = `<div style="font-weight:600">${escapeHtml(file.name)}</div><div style="font-size:12px;color:var(--muted)">${(file.size / 1024).toFixed(1)} KB</div>`;

			const actions = document.createElement('div');
			const btnConv = document.createElement('button'); btnConv.className = 'btn'; btnConv.textContent = 'Convertir';
			btnConv.onclick = () => convertFileById(id);
			const btnRemove = document.createElement('button'); btnRemove.className = 'btn ghost'; btnRemove.textContent = 'Supprimer';
			btnRemove.onclick = () => { removeFileById(id); item.remove(); };
			actions.appendChild(btnConv); actions.appendChild(btnRemove);

			item.appendChild(img); item.appendChild(meta); item.appendChild(actions);
			filesEl.appendChild(item);

			// try to render SVG preview as dataURL
			const reader = new FileReader();
			reader.onload = e => {
				const text = e.target.result;
				// create data url
				const url = 'data:image/svg+xml;utf8,' + encodeURIComponent(text);
				img.src = url;
			};
			reader.readAsText(file);
		}

		function removeFileById(id) {
			const idx = filesList.findIndex(f => f.id === id);
			if (idx >= 0) filesList.splice(idx, 1);
		}

		async function convertFileById(id) {
			const entry = filesList.find(f => f.id === id);
			if (!entry) return alert('Fichier introuvable');
			try {
				const svgText = await entry.file.text();
				const out = await svgToPng(svgText, entry.file.name.replace(/\.svg$/i, ''));
				triggerDownload(out.blob, out.name);
			} catch (err) { console.error(err); alert('Erreur lors de la conversion: ' + err.message) }
		}

		convertAll.addEventListener('click', async () => {
			if (filesList.length === 0) return alert('Aucun fichier à convertir');
			for (const f of [...filesList]) {
				try {
					const svgText = await f.file.text();
					const out = await svgToPng(svgText, f.file.name.replace(/\.svg$/i, ''));
					triggerDownload(out.blob, out.name);
				} catch (err) { console.error(err); alert('Erreur: ' + err.message) }
			}
		});

		// Core conversion
		async function svgToPng(svgText, baseName) {
			// prepare svg: set explicit width/height if missing
			let parser = new DOMParser();
			const doc = parser.parseFromString(svgText, 'image/svg+xml');
			const svg = doc.querySelector('svg');
			if (!svg) throw new Error('Contenu SVG invalide');

			// compute width/height
			let width = parseFloat(svg.getAttribute('width')) || null;
			let height = parseFloat(svg.getAttribute('height')) || null;
			const viewBox = svg.getAttribute('viewBox');
			if ((!width || !height) && viewBox) {
				const parts = viewBox.split(/\s+|,/).map(Number).filter(n => !isNaN(n));
				if (parts.length >= 4) { width = width || parts[2]; height = height || parts[3]; }
			}
			if (!width || !height) { // fallback to scale (treat as square)
				width = height = parseInt(scale.value, 10);
			}

			// target size from UI
			const target = parseInt(scale.value, 10);
			const ratio = target / Math.max(width, height);
			const outW = Math.round((width * ratio) || target);
			const outH = Math.round((height * ratio) || target);
			const deviceRatio = parseFloat(dpi.value) || 1;
			const canvasW = Math.max(1, Math.round(outW * deviceRatio));
			const canvasH = Math.max(1, Math.round(outH * deviceRatio));

			// apply background
			let finalSvgText = svgText;
			if (!transparent.checked) {
				// ensure background rect exists as first child
				const bgColor = bg.value || '#000000';
				// insert a rect at the top of the SVG
				try {
					const cloned = svg.cloneNode(true);
					const bgRect = doc.createElementNS('http://www.w3.org/2000/svg', 'rect');
					bgRect.setAttribute('width', '100%'); bgRect.setAttribute('height', '100%'); bgRect.setAttribute('fill', bgColor);
					cloned.insertBefore(bgRect, cloned.firstChild);
					// serialize entire svg document
					const serializer = new XMLSerializer();
					finalSvgText = serializer.serializeToString(cloned);
					// If original svg had xml declaration or namespaces outside svg node, add them back
					// We'll just wrap with proper svg namespace if missing
					if (!finalSvgText.includes('xmlns="http://www.w3.org/2000/svg"')) {
						finalSvgText = finalSvgText.replace('<svg', '<svg xmlns="http://www.w3.org/2000/svg"');
					}
				} catch (e) { console.warn('échec ajout fond, fallback', e); finalSvgText = svgText; }
			}

			// Create image from SVG string
			const svgBlob = new Blob([finalSvgText], { type: 'image/svg+xml;charset=utf-8' });
			const url = URL.createObjectURL(svgBlob);

			// use createImageBitmap if available for higher fidelity
			let bitmap;
			try { bitmap = await createImageBitmap(svgBlob, { imageOrientation: 'none' }); }
			catch (e) {
				// fallback to using Image element
				bitmap = await new Promise((resolve, reject) => {
					const img = new Image();
					img.onload = () => {
						// draw to offscreen canvas and create bitmap
						resolve(img);
					};
					img.onerror = reject;
					img.src = url;
				});
			}

			// draw to canvas
			const canvas = document.createElement('canvas');
			canvas.width = canvasW; canvas.height = canvasH;
			const ctx = canvas.getContext('2d');
			ctx.imageSmoothingEnabled = true;
			ctx.imageSmoothingQuality = 'high';

			// clear with transparent or explicit color
			if (transparent.checked) ctx.clearRect(0, 0, canvas.width, canvas.height);
			else { /* background already applied inside SVG */ }

			// compute draw size for bitmap/img
			let drawW = canvasW; let drawH = canvasH;
			// If bitmap is an HTMLImageElement it has naturalWidth
			const srcW = bitmap.width || bitmap.naturalWidth || outW;
			const srcH = bitmap.height || bitmap.naturalHeight || outH;

			// draw
			try {
				if (typeof createImageBitmap === 'function' && bitmap instanceof ImageBitmap) {
					ctx.drawImage(bitmap, 0, 0, srcW, srcH, 0, 0, drawW, drawH);
					bitmap.close && bitmap.close();
				} else {
					// image element
					ctx.drawImage(bitmap, 0, 0, drawW, drawH);
				}
			} catch (e) {
				// some browsers cannot draw svg blob as bitmap with certain flags — fallback to image element
				const img = new Image(); img.src = url;
				await new Promise((res, reject) => { img.onload = res; img.onerror = reject; });
				ctx.drawImage(img, 0, 0, drawW, drawH);
			}

			URL.revokeObjectURL(url);

			// export
			const dataUrl = canvas.toDataURL('image/png');
			const blobOut = await (await fetch(dataUrl)).blob();
			const fileName = `${baseName}.png`;
			return { blob: blobOut, name: fileName };
		}

		function triggerDownload(blob, filename) {
			const a = document.createElement('a');
			const url = URL.createObjectURL(blob);
			a.href = url; a.download = filename; document.body.appendChild(a); a.click(); a.remove();
			setTimeout(() => URL.revokeObjectURL(url), 2000);
		}

		function escapeHtml(s) { return s.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;') }

		// drop zone click to open file picker
		drop.addEventListener('click', () => fileInput.click());

	</script>
</body>

</html>